Campbell Scientific VOLT Owner's manual

Brand: Campbell Scientific

Model: VOLT

Category: Measuring, testing & control

Type: Owner's manual

Revision: 01/2020

Campbell Scientific, Inc.

Limited warranty

“Products manufactured by CSI are warranted by CSI to be free from defects in materials and

workmanship under normal use and service for twelve months from the date of shipment unless

otherwise specified in the corresponding product manual. (Product manuals are available for

review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by

CSI, are warranted only to the limits extended by the original manufacturer. Batteries, fine-wire

thermocouples, desiccant, and other consumables have no warranty. CSI’s obligation under this

warranty is limited to repairing or replacing (at CSI’s option) defective Products, which shall be

the sole and exclusive remedy under this warranty. The Customer assumes all costs of removing,

reinstalling, and shipping defective Products to CSI. CSI will return such Products by surface

carrier prepaid within the continental United States of America. To all other locations, CSI will

return such Products best way CIP (port of entry) per Incoterms ® 2010. This warranty shall not

apply to any Products which have been subjected to modification, misuse, neglect, improper

service, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties,

expressed or implied. The warranty for installation services performed by CSI such as

programming to customer specifications, electrical connections to Products manufactured by CSI,

and Product specific training, is part of CSI's product warranty. CSI EXPRESSLY DISCLAIMS AND

EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE. CSI hereby disclaims, to the fullest extent allowed by applicable law, any and all

warranties and conditions with respect to the Products, whether express, implied or statutory,

other than those expressly provided herein.”

Assistance

Products may not be returned without prior authorization. The following contact information is

for US and international customers residing in countries served by Campbell Scientific, Inc.

directly. Affiliate companies handle repairs for customers within their territories. Please visit

www.campbellsci.com to determine which Campbell Scientific company serves your country.

To obtain a Returned Materials Authorization (RMA) number, contact CAMPBELL SCIENTIFIC,

INC., phone (435) 227-9000. Please write the issued RMA number clearly on the outside of the

shipping container. Campbell Scientific’s shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____

815 West 1800 North

Logan, Utah 84321-1784

For all returns, the customer must fill out a “Statement of Product Cleanliness and

Decontamination” form and comply with the requirements specified in it. The form is available

from our website at www.campbellsci.com/repair. A completed form must be either emailed to

repair@campbellsci.com or faxed to (435) 227-9106. Campbell Scientific is unable to process any

returns until we receive this form. If the form is not received within three days of product receipt

or is incomplete, the product will be returned to the customer at the customer’s expense.

Campbell Scientific reserves the right to refuse service on products that were exposed to

contaminants that may cause health or safety concerns for our employees.

Safety

DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS,

TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC. FAILURE

TO PROPERLY AND COMPLETELY ASSEMBLE, INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS, TOWERS, AND ATTACHMENTS, AND

FAILURE TO HEED WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS INJURY, PROPERTY DAMAGE, AND PRODUCT FAILURE.

TAKE ALL REASONABLE PRECAUTIONS TO AVOID THESE HAZARDS. CHECK WITH YOUR ORGANIZATION'S SAFETY COORDINATOR (OR

POLICY) FOR PROCEDURES AND REQUIRED PROTECTIVE EQUIPMENT PRIOR TO PERFORMING ANY WORK.

Use tripods, towers, and attachments to tripods and towers only for purposes for which they are designed. Do not exceed design limits. Be

familiar and comply with all instructions provided in product manuals. Manuals are available at www.campbellsci.com or by telephoning

(435) 227-9000 (USA). You are responsible for conformance with governing codes and regulations, including safety regulations, and the

integrity and location of structures or land to which towers, tripods, and any attachments are attached. Installation sites should be evaluated

and approved by a qualified engineer. If questions or concerns arise regarding installation, use, or maintenance of tripods, towers,

attachments, or electrical connections, consult with a licensed and qualified engineer or electrician.

General

l Prior to performing site or installation work, obtain required approvals and permits. Comply with all governing structure-height

regulations, such as those of the FAA in the USA.

l Use only qualified personnel for installation, use, and maintenance of tripods and towers, and any attachments to tripods and

towers. The use of licensed and qualified contractors is highly recommended.

l Read all applicable instructions carefully and understand procedures thoroughly before beginning work.

l Wear a hardhat and eye protection, and take other appropriate safety precautions while working on or around tripods and towers.

l Do not climb tripods or towers at any time, and prohibit climbing by other persons. Take reasonable precautions to secure tripod

and tower sites from trespassers.

l Use only manufacturer recommended parts, materials, and tools.

Utility and Electrical

l You can be killed or sustain serious bodily injury if the tripod, tower, or attachments you are installing, constructing, using, or

maintaining, or a tool, stake, or anchor, come in contact with overhead or underground utility lines.

l Maintain a distance of at least one-and-one-half times structure height, 20 feet, or the distance required by applicable law,

whichever is greater, between overhead utility lines and the structure (tripod, tower, attachments, or tools).

l Prior to performing site or installation work, inform all utility companies and have all underground utilities marked.

l Comply with all electrical codes. Electrical equipment and related grounding devices should be installed by a licensed and qualified

electrician.

Elevated Work and Weather

l Exercise extreme caution when performing elevated work.

l Use appropriate equipment and safety practices.

l During installation and maintenance, keep tower and tripod sites clear of un-trained or non-essential personnel. Take precautions to

prevent elevated tools and objects from dropping.

l Do not perform any work in inclement weather, including wind, rain, snow, lightning, etc.

Maintenance

l Periodically (at least yearly) check for wear and damage, including corrosion, stress cracks, frayed cables, loose cable clamps, cable

tightness, etc. and take necessary corrective actions.

l Periodically (at least yearly) check electrical ground connections.

WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER

ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR

ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.

Table of contents

1. Introduction 1

2. Precautions 1

3. Initial inspection 1

4. Measurement quickstart using SURVEYOR 2

5. Programming quickstart using SURVEYOR 5

6. Programming quickstart using Short Cut 6

7. Overview 9

7.1 Wiring panel overview 10

7.1.1 Analog input 11

7.1.1.1 Single-ended measurements 11

7.1.1.2 Differential measurements 12

7.1.1.3 Period averaging 12

7.1.2 Voltage and current excitation 12

7.1.3 Switched voltage output 12

7.1.4 Grounding terminals 13

7.1.5 Power terminals 13

7.1.5.1 Power in 13

7.1.5.2 Power out 13

7.1.6 Communications ports 13

7.1.7 LED indicators 14

7.1.7.1 COMM status 14

7.1.7.2 CPI port 14

8. Specifications 14

8.1 Voltage measurements 14

8.2 Resistance measurements 16

8.3 Voltage and current excitation 17

8.4 Period averaging 18

8.5 Voltage output 19

8.5.1 Continuous 12 VDC 19

Table of Contents - iv

8.5.2 Switched 12 VDC 19

8.5.3 Switched 5 VDC 20

8.6 Module 20

8.6.1 Communications 20

8.6.2 System 21

8.6.3 Power requirements 21

8.6.4 Compliance 21

8.6.5 Physical attributes 21

9. Installation 21

9.1 Install driver for computer connection 22

9.2 Operating systems 22

9.3 Configuring VOLT 100 series 23

9.3.1 Configuring with SURVEYOR 23

9.3.2 Configuring with the CPIAddModule() instruction 23

9.3.3 Configuring with Device Configuration Utility 23

9.3.4 Configuring with CPIStatus table 24

9.4 Data logger programming 25

9.4.1 Scan buffers 25

9.4.2 GRANITE Measurement Module instructions 25

9.5 Data logger connection 26

9.6 Connecting multiple GRANITE Measurement Modules 26

9.6.1 Daisy-chain topology 27

9.6.2 Star topology 27

9.7 Power connection 28

9.7.1 Power-up sequence 29

9.8 Earth ground connection 29

9.9 Mounting in an enclosure 29

10. Operation 31

10.1 SURVEYOR control 31

10.2 Data logger control 31

10.3 Measurements 31

10.3.1 First notch frequency 32

10.3.2 Panel temperature 32

10.4 Fast measurements 33

10.4.1 Measurement speed 33

Table of Contents - v

10.4.1.1 Sub-scans 35

10.4.1.2 Burst measurements 35

10.4.2 CPI network bit rate 36

10.5 Multiple devices 37

10.6 Switched voltage output 37

11. Maintenance and calibration 38

12. Troubleshooting 38

12.1 CPIStatus table 39

12.2 COMM status LED 39

12.3 CPI port LEDs 40

12.4 Replacing a GRANITE measurement module 40

Appendix A. Importing Short Cut code into CRBasic Editor 41

Appendix B. Analog voltage measurement range and resolution 42

Appendix C. Example programs 45

C.1 Configuring GRANITE Measurement Module with CPIAddModule() 45

C.2 Measuring thermocouples 46

C.3 Measuring TEMP120 and VOLT108 at different speeds 47

C.4 Synchronized TEMP120 and VOLT108 measurements 48

C.5 Controlling an AM16/32B multiplexer 49

Appendix D. Calculating network restrictions 51

D.1 Example 1 51

D.2 Example 2 52

D.3 Example 3 53

Campbell Scientific regional offices 55

Table of Contents - vi

1. Introduction

The VOLT 108 and VOLT 116 are 24-bit analog input modules that significantly increase the

number of analog channels in a data logger system. The VOLT 108 has eight differential channels

and the VOLT 116 has 16 differential channels.

The VOLT 108 and VOLT 116 feature a 24-bit analog-to-digital converter and a low-noise, analog

front-end to provide superior analog measurements. They also support period average

measurements and include both current and voltage excitation channels.

Connect up to 50 GRANITE Measurement Modules to a single data logger.

Throughout this manual, any reference to the VOLT 100 series applies to both the VOLT 108 and

VOLT 116, unless specifically noted.

2. Precautions

l READ AND UNDERSTAND the Safety (p. iii) section at the front of this manual.

l WARNING:

Protect from over-voltage

Protect from water

Protect from ESD (electrostatic discharge)

l IMPORTANT: Maintain a level of calibration appropriate to the application. Campbell

Scientific recommends factory recalibration of the VOLT 100 series every three years.

3. Initial inspection

l The VOLT 100 series ships with the following:

GRANITE Parts Kit (1)

Calibration certificate. For more information watch a video at

https://www.campbellsci.com/videos/calibration-certs.

VOLT 100 series 1

l Inspect the packaging and contents for damage immediately. File damage claims with the

shipping company.

l Check packaging materials for all products. Check model numbers, part numbers, product

descriptions, and cable lengths against shipping documents. Model or part numbers are

found on each product. Cable numbers are normally found at the end of the cable that

connects to the measurement device. Check that expected cable lengths were received.

Contact Campbell Scientific immediately if you find any discrepancies.

l Check the operating system version in the VOLT 100 series, and the data logger. Update as

needed. See Operating systems (p. 22).

4. Measurement quickstart

using SURVEYOR

Campbell Scientific SURVEYOR software is an easy way to quickly see measurement results and

store data from the VOLT 100 series. The module configuration can be saved on the computer or

exported as a CRBasic data logger program. SURVEYOR is available as a download from

www.campbellsci.com/cs-surveyor.

This section will guide you through reading a differential Type-T thermocouple on a VOLT 100

series. With minor changes, these steps can apply to other compatible measurements.

Open SURVEYOR .

2. Connect a USB cable between your computer and the VOLT 100 series USB port.

3. Apply 9.6 to 32 VDC external power using the green Power connector on the side of the

VOLT 100 series.

Select Connect Now .

5. Select the communications port, it will be labeled similar to VOLT 100 series(COM3).

6. Make selections for Speed or Noise Rejection and CAN enabled. See the SURVEYOR help

for more information on all settings.

7. Click Apply.

8. Select a Sample Rate. For this exercise, select 10 Hz. (1/2 Hz is typical for thermocouple

measurements.)

VOLT 100 series 2

9. Add Measurement(s). For this exercise, add a Type-T differential thermocouple on DIFF1.

VOLT 100 series 3

10. Wire the sensor according to the given wiring diagram.

11. Complete the rest of the form and Apply to save the configuration.

VOLT 100 series 4

12. Check the resulting measurements in the numeric and graphic displays.

13.

Click Start Storing Data . While data is being stored the option to stop or

pause data storage become available.

5. Programming quickstart

using SURVEYOR

Campbell Scientific SURVEYOR is an easy way to generate a simple CRBasic program for your

Campbell Scientific data acquisition system.

1. Configure the VOLT 100 series for measurements, see Measurement quickstart using

SURVEYOR (p. 2).

VOLT 100 series 5

2. Select File > Export Datalogger Program then select the data logger you will be connecting

the VOLT 100 series to. For this example, we'll select GRANITE 6.

3. By default, the CRBasic program will be saved in

C:\Users\username\Documents\SURVEYOR.

6. Programming quickstart

using Short Cut

Short Cut is an easy way to program the GRANITE data acquisition system to measure a sensor

and assign wiring terminals. Short Cut is available as a download from

https://www.campbellsci.com/shortcut. It is also included in installations of LoggerNet and

RTDAQ.

The following procedure shows using Short Cut to program the data logger to measure a type-T

thermocouple on a VOLT 100 series.

1. Open Short Cut and click Create New Program.

2. Double-click your GRANITE data logger.

3. In the Available Sensors and Devices box, start typing GRANITE. You can also locate it in

the Devices folder. Double click the GRANITE Measurement Module you are working with.

Type the serial number located on the VOLT 100 series label. Optionally, type a name in the

Module ID String if you want the module to have an ID. This is useful when multiple VOLT

100 series modules are connected to the GRANITE data logger.

VOLT 100 series 6

4. In the Available Sensors and Devices box, type Type T. You can also locate the

thermocouple in the Sensors > Temperature folder. Double click Type T Thermocouple.

Type the number of type T thermocouples connected to the VOLT 100 series. The

temperature defaults to degree C. This can be changed by clicking the Temperature units

box and selecting one of the other options.

VOLT 100 series 7

5. Click on the Wiring tab to see how the sensor is to be wired to the VOLT 100 series. Click

OK after wiring the thermocouple.

6. Repeat steps four and five for other sensors you want to measure. Click Next.

7. In Output Setup, type the scan rate, a meaningful table name, and the Data Output

Storage Interval.

VOLT 100 series 8

8. Select the measurement and its associated output option.

9. Click Finish and save the program. Send the program just created to the GRANITE data

logger if it is connected to the computer.

10. If the thermocouple is connected to the VOLT 100 series, check the output of the

thermocouple in the data logger support software data display in LoggerNet or RTDAQ to

make sure it is making reasonable measurements.

7. Overview

The VOLT 100 series expands the number of analog measurement terminals and increases the

measurement-speed potential in a data logger system. GRANITE Measurement Modules operate

through a data logger program and communicate using the CAN peripheral interface (CPI). A

single data logger can operate up to 50 GRANITE Measurement Modules.

The VOLT 100 series is compatible with the following data loggers:

l GRANITE 10

l GRANITE 9

l GRANITE 6

l CR6

l CR1000X

VOLT 100 series 9

7.1 Wiring panel overview

CAUTION:

To avoid damage to sensors and devices, ensure that each removable wiring-terminal strip is

connected to the VOLT 108 and VOLT 116 in the proper location before applying power. Each

strip is keyed identically.

FIGURE 7-1. VOLT 108 Wiring panel

FIGURE 7-2. VOLT 116 Wiring panel

VOLT 100 series 10

FIGURE 7-3. Power and CPI ports view (left) and ground lug view (right)

7.1.1 Analog input

Analog sensors output a continuous voltage or current signal that varies with the phenomena

measured. Sensors compatible with the VOLT 100 series output a voltage. Current output can be

made compatible with a resistive shunt.

Sensor connection is to H/L terminals configurable for differential (DIFF), single-ended (SE), or

period-average inputs. For example, differential channel 1 is comprised of terminals 1H and 1L,

with 1H as high and 1L as low.

l Maximum input voltage range: ±5000 mV

l Measurement resolution range: 0.020 to 14.756 µV

RMS

7.1.1.1 Single-ended measurements

A single-ended measurement measures the difference in voltage between the terminal

configured for single-ended input and the reference ground. Single-ended terminals are labeled

VOLT 100 series 11

in blue. The VOLT 108 has 16 SE terminals, and the VOLT 116 has 32. For example, single-ended

channel 1 is comprised of terminals 1 and ⏚.

7.1.1.2 Differential measurements

A differential measurement measures the difference in voltage between two input terminals. Use

a differential measurement to measure current by using external resistors to convert current to

voltage. The VOLT 108 has 8 H/L differential terminals, and the VOLT 116 has 16.

7.1.1.3 Period averaging

Single-ended terminals on the VOLT 100 series are also configurable for measuring the period of

an analog signal.

l Voltage gain: 1, 3.8, 19, 67

l Maximum frequency: 200 kHz

l Resolution: 130 ns ÷ number of cycles to be measured

7.1.2 Voltage and current excitation

X terminals supply switched voltage or current to sensors. The VOLT 108 has two X terminals, and

the VOLT 116 has four.

l Voltage Excitation (switched-analog output) – X terminals, configured for voltage

excitation output, supply precise voltage in the range of ±5000 mV. These terminals are

regularly used with resistive-bridge measurements. Each terminal will source up to ±50 mA.

l Current Excitation (switched-analog output) – X terminals, configured for current excitation

output, supply precise current in the range of ±2.5 mA. These terminals are regularly used

with resistive-bridge measurements.

7.1.3 Switched voltage output

SW5V and SW12V terminals supply voltage and control for sensors. The VOLT 108 includes two

SW5V and one SW12V terminals. The VOLT 116 includes four SW5V and two SW12V terminals.

l 5 V control – SW5V terminals supply 5000 mV. See Switched 5 VDC (p. 20) for information

on voltage and current sourcing limits.

l Switched 12 V – SW12V terminals supply 12 V and will source up to 200 mA each.

VOLT 100 series 12

7.1.4 Grounding terminals

Proper grounding lends stability and protection to a data acquisition system. It is the easiest and

least expensive insurance against data loss — and often the most neglected. The following

terminals are provided for connection of sensor and VOLT 100 series grounds:

l Signal Ground (⏚) – reference for single-ended analog inputs, excitation returns, and as a

ground for sensor shield wires. Current loop sensors, however, should be grounded to

power ground.

l Power Ground (G) – return for 5V, 12V, and current loop sensors. Use of G grounds for

these outputs minimizes potentially large current flow through the analog-voltage-

measurement section of the wiring panel, which can cause single-ended voltage

measurement errors.

l Earth Ground Lug (⏚) – connection point for a heavy-gage earth-ground wire. A good

earth connection is necessary to secure the ground potential of the VOLT 100 series and

shunt transients away from electronics. 14 AWG wire, minimum, is recommended.

NOTE:

Several ground wires can be connected to the same ground terminal.

7.1.5 Power terminals

7.1.5.1 Power in

The removable Power connector is the connection point for external power supply components.

The power supply must be in the range of 9.6 to 32 VDC.

7.1.5.2 Power out

The VOLT 100 series can be used as a power source for sensors. The following voltage terminals

are available:

l 12V and SW12V – Regulated 12 VDC when the supply voltage is 14.5 to 32 VDC. Below 14.5

VDC, the voltage tracks the power supply. Current output is limited to 200 mA.

l SW5V – See Switched 5 VDC (p. 20) for information on voltage and current sourcing limits.

7.1.6 Communications ports

One micro-B USB port, labeled USB, is for communicating with a computer through SURVEYOR

or Device Configuration Utility software.

VOLT 100 series 13

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Campbell Scientific VOLT Owner's manual

Brand: Campbell Scientific

Model: VOLT

Category: Measuring, testing & control

Type: Owner's manual

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Campbell Scientific VOLT Owner's manual

Campbell Scientific VOLT Owner's manual

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